Examine source code of Extravagance by MaDonna

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#c59ad0",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Extravagance by MaDonna",
  "manifest_version": 2,
  "description": "Designed by MaDonna\n\nMy wallpaper to match is at: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/a60cc0d2dcc8a1e774343c65d35c6b719063fe414503de627a4f03c731318de4/http%3A//nature.desktopnexus.com/wallpaper/1601194/\">http://nature.desktopnexus.com/wallpaper/1601194/</a>"
}